Apparatus for obtaining a measured feed.



J. A. SWINDELL APPARATUS FOR OBTAINING A MEASURED FEED.

APPLICATION I'ILBD MAY 14, 190B.

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APYLIOATION FILED MAY 14, 1908. I

Patented Apr. 6, 1909.

2 SHEETS-SHEET 2.

' INVENTOR G- WW a- QQAAAA WITNESSES in srar s PAEENTUFMCE.

APPARATUS non OBTAINING ii nmAsunEn rnnn.

monomers.

Specification-of Letters Patent.

Patented A rn e, 1909.

' Application filed. May 14, 1908. Serial No. 432,820.

form of ap aratus embodying my invention;

Figs. 2 an 3 are sections on the lines 11-11 and III-III respectively of Fig. 1; Figs. 4 and 5 are sectional views similar to Figs. 1 and 2 respectively, showing a modified form of the apparatus; and Fig. 6 is a view similar to Fig 1, showing another modification.

7 My inventlon has relation to ap aratus for obtaining a measured feed of fue grain or other materials.

The invention is particularly adapted for use forfeeding successive measured charges of fuel to a gas producer or boiler furnace, but may be used for other purposes.

The precise nature of my invention will be best understood by reference to the accompanying drawings, in which I have shown several embodiments thereof, and which will now be descr1bed,it being premised, however, thatvarious changes may be made in the construction and arrangement of the parts by those sk lled in .the art without departing from the spirit and sec e of my invention as defined inthe appende claims.

Referring first to the construction shown in Figs. 1 2 and 3, the numeral 2 designates a cylindrical shell or casing, whose ends are closed by heads 3, which are screwed'u on the threaded ends of the cylinder 2. he cylinder 2 is provided at one side, preferably a the top, with an inlet opening 4, and directlyopposite thereto is an outlet opening and connection 5. Rotatably arranged within the casing or shell 2 is a body 6 formed with an opening 7, which communicates with a cut-away portion 8. f

9 designates a plunger, which works within the opening 7 in the body 6, and which is carried y the head 10 which is seated and works in the cut-away portion 8.

11 designates se mental cam rings, which roject inwardly through slots in the cyliner-2 and into engagement with grooves 12 terial.

pocket which can in the body 6. These cam rings may be secured in any suitable manner, bolted as shown at 13 to projecting flanges 14 of the heads 3.. Inasmuch as each of the cam rings extends around somewhat more than one-half a circumference, they are preferably made in two sections, as indicated in Fig. for convenience in assembling and removing. The cut-away portion 8 is closed lgyda rietal piece 15, which is secured to the o y The operation is as followse-VVhedthe parts are in the position shown in Fig. 1, the plunger 9 is in its lowest position and the space above the plunger within the opening 7 of the body 6 forms a pocket for the reception of a definite quantit of the material to be measured and fed. l hen this pocket is filled, the body 6 is rotated, and the cams 12 begin to act upon the head 10 to force the plunger upwardly or outwardly into the hole 7, until at the time the said hole is brought into line with the discharge opening 5 the plunger 7 will have been moved to a point where its outer end face is flush with the cylindrical surface of the body 6. In order to prevent compression of the material contained in said pocket, the earns 12 are so shaped that the outward movement of the plunger does .not commence until thebody 6 has been rotated some distance away from its receiving position toward its discharging position and the wall 5 of the discharge opening 5 is flared upwardly and outwardly to form the clearance'space 16', whereby the material can commence to discharge as soon as the plunger has an appreciable outward movement. The outer face of the plunger is preferably made of convex form, conforming to the curvature of the body 6 so that when the plunger is at its outermost position its end surface will conform to the adjacent surface of said body. This prevents any space in which any of the material can lodge, and effects a complete discharge of such ma- The inner edges of the cam rings 12 are so shaped that the plunger will not commence its retracting movement until it has passed the discharge opening 5 and is on its way upwardly, so that the pocket formed by the opening 7 remains entirely closed by the plunger until it has been carried past the discharge opening. This avoids any space or become filled with gases as by being cylindrical body rotatably mounted therein a Cl where the devicb is used for feeding furnaces. It is for this reason thatthe apparatus is especially designed for feeding gas producers, and other furnaces, since there is no opportunity for any of the gases from the furnace to escape during .the operatlon of the fuel discharge. 1

The body 6 maybe rotated by any suitable means, being shown as provided with extended shafts or journals 6. A pi e or conduit can be connected to the disc arge connection 5 and lead to any desired polnt.

In the case of a gas producer, such pipe orconduit will extend downwardly throng the top of the furnace to the feed opening thereof, while in the case of an under-feed boiler furnace this ipe or connectionwould lead underneath t e grate and upwardly to the fuel-feeding opening OfIthe furnace. The

apparatus may also be used as a grain elevator, in which case the pipe or conduit in the opening 5 can be led upwardly to any de- I 1 have shown one of the'shafts or'joIurnals of the rotating bod 6 as having a driving wheel 17.

'The mod cation shown in Fig. 6 is of sub'. stantially the same construction as that shown Fig. 4, but I have shown a spring 18 surrounding the plunger 9 and seated between the head 10' and the inner wall of the cut-away portion 8 for the pn ose of posin the formtively retracting the plunger. first described, the retraction of the plunger is efiected mainly by gravity, and insome cases it is possible that it might become wedged by the particles of material so that it might stick .or fail-to operate properly. This can be prevented by the provislon of such as shown in Fig. 6.

so that the apparatus can be used 1n close proximity to the furnace to be fed.

Wherethe parts are arranged as shown in the drawings, the cams I2 may be insome cases dispensedwith and gravity relied upon to operate the plunger.

Various other changes may be made in they detalls of construction and arrangement.

What I claim is 1 In apparatusf the character described, the combination of a closed casing or shell, a

and having an opening or pocket, a plunger working 1n sa d opening orpocket and having a head seated 1n a cut-away portion of the b y, and am'rings secured to. the shell and I opening, of a cylin rical body be noted that there are no parts of the devlce of a characterlikely to be injured by heat,

projecting inwardly into actuating engagement with said head; said .body havingmounted in said casing or shell and having a pocket in one side thereof, the opposite side of the body having a portion of its (periphery cut away; and a plunger seate in said pocket and havinga head extending parallel with the axis of the cylindrical body and seatedin the cut-away portion thereof together with cam means engaging each end portion of said head and arranged toreciprocate the plunger once for each rotation of the body; substantially as described.

3. In a paratus of the character described, the com ination of an inclosing casing or shell having an inlet 0 ening and'a dischar e rotatab y mounted therein, said body having a radial pocket, and a cut-away ortion into which the pocket opens at its ottom, a plunger working in the 1 ocket, a head attached to the plunger and movable in the cut-away portion of the body, and cam means for engaging the head to actuate it and the lunger to reciprocate the plunger durin eac revo lution of the body, the rear walI described.

4 In apparatus of the character described,

the combination'with a casing or shell, of a cylindrical body rotatably mounted therein and formed with grooves, said body having a pocket extending'into it at one side, and a cut-away portion at the opposite side with which the pocket communicates, a plunger working in the pocket and-having a head seated in the cut-away portion of the body, and cam rings secured to the casing or shell and extending inwardly into the grooves in thecylindrica body into position to engage the respective end portions of the plunger, head as the body is rotated; substantially as .described.

' 5. In apparatus of the character described,

the combination with a casing or shell, of a body rotatably mounted therein, said body having a pocket extending therein at one side, and a cut-away portion at its opposite side into which the pocket opens, a plunger working in said pocket and having a head portion seated in the cut-away portion of the ody, cam means for reciprocating the plunof the dischargeopening being flared rearwardly' tov .provide a clearance space; substantially as 'ger during each rotation of the body and a plate secured to the body over its cut-away.

portion; substantially as described.

6. In apparatus of the character described a rotatable body having an opening or pocket extending therethrough, a plunger arranged to reciprocate in said pocket, and stationary cams located at opposite sides of the plunger and engaging the same as the body is rotated to actuate said plunger; substantially as de-.

scribed.

JOHN A. SWINDELL,

Witnesses H. M. Conwm, GEO. H, PARMELEE. 

